Nikolay Andreyev may refer to:Nikolai Andreev, Russian mathematician and popularizer of mathematics Nikolay Andreyev (sculptor) (1873–1932), Russian sculptor, graphic artist and stage designer Nikolay Andreyev (photographer) (1882–1947), Russian photographer and photo artist Nikolai Andreyev (physicist) (1880–1970), Soviet physicist Nikolay Andreyev (folklorist) (1892–1942), Russian folklorist and literary critic